@incollection{AST_2004__297__79_0, author = {Kaloshin, Vadim and Mather, John N. and Valdinoci, Enrico}, title = {Instability of resonant totally elliptic points of symplectic maps in dimension 4}, booktitle = {Analyse complexe, syst\`emes dynamiques, sommabilit\'e des s\'eries divergentes et th\'eories galoisiennes (II)}, editor = {Loday-Richaud Mich\`ele}, series = {Ast\'erisque}, pages = {79--116}, publisher = {Soci\'et\'e math\'ematique de France}, number = {297}, year = {2004}, mrnumber = {2135676}, zbl = {1156.37313}, language = {en}, url = {http://www.numdam.org/item/AST_2004__297__79_0/} }